Loose-leaf binder.



PATENTED AUG. 9, 1904.

N0 MODEL L. ANDERSON.

LOOSE LEAF BINDER.

APPLICATION FILED OUT 12, 1903 kzzzzzfizzzzzzzzzzzzzzzaz UNITED STATES Patented August 9, 1904.

LABS ANDERSON, OF CHICAGO, ILLINOIS.

LOOSE-LEAF BINDER.

SPECIFICATION formingpart of Letters Patent No. 767,197, dated August 9, 1904.

pp n filed October 12, 1903. Serial No. 176,744. (No model.)

To aZZ whom it may concern:

Be it known that I, LARS ANDERSON, acitizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Loose-Leaf Binders, of which the following is a specification.

One of the objects of this invention is the production of a binder for loose leaves and the like which shall be strong and durable in construction and of large capacity.

A further object is the production of a binder having a divided back, the parts of the back being positively moved to open or close the binder.

The invention further relates to the various improvements in loose-leaf binders to be hereinafter pointed out.

In the accompanying drawings, Figure 1 is an under face view, partly in section, of a binder embodying the features of my invention. Fig. 2 is a transverse sectional view on dotted line 2 2 of Fig. 1. Fig. 3 is a fragmental sectional view on dotted line 3 3 of Fig. 2.

In the construction of a binder embodying this invention I provide a back piece A of rectangular form, having secured to its rear face bearings A for rotatably supporting a shaft A which shaft has worms A and A formed thereon, and also has one of its ends squared to receive a socket key or crank, to be hereinafter described. The rear face of the back piece A is also provided with two bearing-studs A and A secured in any suitable manner,

. as by riveting, to said back piece and being adapted to rotatably support the disks A and A which disks have the worm-wheels A and A secured thereto,respectively. The wormwheels A and A engage with the worms A and A, whereby rotatory motion of the shaft A is imparted to the disks A A Each of the bearing-studs A A is provided with an enlarged base portion A for holding the disks A A a little distance away from the the back piece A. Two guide-studs A A are secured to and project from the rear face of the back piece A near each side edge thereof, which studs are for guiding and holding in place the sliding side members to be next described. These side members B and C comprise angle-plates and have elongated guideopenings B and C in their rear flanges to receive the studs A A, respectively. The meeting edges of the rear flanges of the side members B and C are notched at B and C to provide for the admission of the bearings A- when said side members close together. The forwardly-extending flanges B C of the side members B and C carry four pairs of telescoping impaling-pins, two of which individual pins on each flange are tubular and two are solid. B* and B and C and C indicate the tubular pins and B and B and (J and C the solid pins.

As implied by the foregoing description,the side members B and C slide upon their guidestuds A A with reference to the back piece A, such sliding movement being imparted to the side members by means of links B C and B O, pivotally connected in pairs with the disks A A and the side members B and (1.

To cover the mechanism hereinbefore described, I provide a shield-plate D, substantially of the same Width as the back piece A, each end of said shield-plate being bent forward at aright angle in the flanges D to close the ends of the binder, each of said forwardly-extending portions being again bent upon itself in the loop D and thence at right angles to form the flange D, by which said shield-plate is attached to the front side of the back piece A. The flange D at one end of the binder is provided with an opening D to give access to the squared end of the shaft A Each of the side portions B and C is also provided with a shield E and F, respectively, which last-mentioned shields comprise pieces of sheet metal or other suitable material bent at a right angle, one flange of each of said pieces being secured to the flanges B and of the side members B and C, respectively, the other flange lying within the shield D. The ends of the shields E and F are closed by the flanges E and F, respectively, formed integral with their said shields and adapted to slide within the loop D of the shield-plate D.

G refers to a key or crank for rotating the shaft A said key having a socket G, adapted to receive the square end of said shaft.

The usual covers of strawboard or other suitable material are attached to the binder- I back hereinbefore described in any suitable manner, as by means of the strips H, which strips are secured to the flanges B and of the side pieces B and C in any suitable manner.

As will be seen, the rear side of the binderback is closed by means of the shields D, E, and F, the shield D being stationary and the shields E and F sliding within the shield D as the side members are moved in and out.

The binder is opened and closed by turning the shaft A the rotatory motion of said shaft being imparted to the disks A A and the worm-wheels A A and to the side members B and C by means of the links B C B" C, extending between the disks A A and said side members. The telescoping pins are of such lengths that they always remain in engagement.

It is clear that various changes may be made in the construction of this binder without departing from the spirit and scope of my invention, wherefore I desire to have it understood that I do not limit myself to the precise details herein set forth.

I claim as my invention 1. In a loose-leaf binder, in combination, two side members; holding-pins fixed with relation to said side members; and means for moving said side members toward and from each other, which means comprises two rotatable disks having a link connection with said side members, a worm-wheel for rotating each of said disks, and a worm-shaft for rotating said worm-wheels.

2. In a loose-leaf binder, in combination, a back piece; two side members; holding-pins carried by said side members; a disk rotatably mounted on said back piece and. having a link connection with said side members; a worm-wheel fixed to each of said disks for rotating the disks; and a worm-shaft rotatably supported on said back piece for rotating said worm-wheels.

3. In a loose-leaf binder, in combination, a back piece; two side members, both movable with relation to said back piece; means mounted upon the under side of said back piece for moving said side members toward and from each other; ashield-plate extending beneath said back piece for covering said moving means; andv a shield carried by said side members and adapted to coact with said shield-plate.

4,. In a loose-leaf binder, in combination, a back piece; two side members, both movable with relation to said. back piece; means mounted on the under side of said back piece for moving said side members toward and from each other; a shield-plate extending beneath said back piece for covering said moving members, the ends of said shield-plate being bent at a right angle to close the ends of the binder; and a shield carried by each of said side members, said last-mentioned shields extending within and adapted to slide upon said shield-plate.

LARS ANDERSON.

IVitnesses:

L. L. MILLER, GEORGE L. CHINDAHL. 

